Lowell UPS8 Series Manual
Pg. 23
TROUBLESHOOTING
If the UPS does not operate correctly, use the table below to troubleshoot the problems .
Symptom
Possible Cause
Remedy
No indication and alarm even though the
utility is normal .
The AC input power is not connected
well .
Check that the input power cord is firmly
connected to the utility .
The AC input is connected to the UPS
output .
Plug the AC input power cord into the AC input
utility correctly .
The icon and the warning code
are flashing on LCD display and alarm is
sounding every second .
EPO function is enabled .
Set the circuit to the closed position to disable
EPO function .
The icon and are flashing on
LCD display and alarm is sounding every
second .
Line and neutral conductors of UPS input
are reversed .
Have a qualified electrician correct the input
receptacle wiring .
The icon and are flashing on
LCD display and alarm is sounding every
second .
The internal battery is incorrectly
connected .
Check to make sure all batteries are properly
connected .
Fault code is shown as 27 and the
icon is showing on LCD display and
alarm is continuously sounding .
Battery voltage is too high or the charger
is in fault condition .
Contact your dealer for support .
Fault code is shown as 28 and the
icon is showing on LCD display,
and alarm is continuously sounding .
Battery voltage is too low or the charger is
in fault condition .
Contact your dealer for support .
Fault code is shown as 14 and alarm is
continuously sounding .
The UPS shut down automatically
because short circuit condition occurred
on the UPS output .
Disconnect loads and check output wiring or
connected devices are in short circuit status .
Fault code is shown as 01, 02, 03, 04,
11, 12, 13, and 41 on LCD display and
alarm is continuously sounding .
A UPS internal fault has occurred . There
are two possible results:
1 . The load is still supplied, but directly by
AC utility via bypass .
2 . The load is no longer supplied with
power .
Contact your dealer for support .
Battery backup time is shorter than expected .
Batteries are not fully charged .
Charge the batteries for at least 5 hours and then re-
check capacity . If the problem still exists, contact your
dealer for support .
Batteries are defective .
Contact your dealer for battery replacement .
